User blog comment:Vedsaik123/Possible/Upcoming Legendaries/@comment-31308142-20170607193754

Yvetal because of the tree of life in a route.

Xerenes because of the tree of life in a route.

Hoopa due to it being game mascot.

​Rayquaza since in Anthian City-Battle District, a guy tells a story in which he mentions "snake" and "mysterious air current"